NEW YORK (AP) -- Stephenie Meyer (MY'-er), author of the "Twilight Saga," has yet another smash hit on her hands.

"The Short Second Life of Bree Tanner: an Eclipse Novella" has scored sales of more than 1 million copies in the U.S. since its June 5 release.

Publisher Little, Brown Books for Young Readers said Monday it now ranks as the year's best-selling book so far. It had debuted on several best-seller lists in the U.S., as well as in numerous countries around the world.

The novella follows the adventures of Bree Tanner, a newborn vampire introduced in the "Twilight" volume "Eclipse."

In less than five years, nearly 100 million copies of the "Twilight Saga" teen-vampire books have been sold in nearly 50 countries, said Little, Brown.